Assertions

Assertions

Watch

Catching errors early with assertions (7:12)

Read

• Blog entry with discussions on assertions Links to an external site.
• Wikipedia entry on metamorphic testing Links to an external site.

Depending on the programming language(s) and test framework you choose, at least one of the following:

1. JUnit documentation Links to an external site. (or a similar test framework for Java)
2. Pytest documentation Links to an external site. (or a similar test framework for Python)
3. Jest documentation Links to an external site. (or a similar test framework for JavaScript)

Reflect

• How do you verify the system behavior?
  • Crash testing?
  • Assertions at the end of the test code?
  • Assertions inside the implementation?
• How do you come with the test oracle (and assertions)?
  • Can metamorphic testing always help?